Question

If you can walk 3.2 miles in 2.4 hours, how many minutes does it take to walk 1.84 miles? Round to 1 decimal.

Answer 1

Time = 82. 9 mins

Explanation:

Given the following data;

Distance = 3.2 miles

Time = 2.4 hours to minutes = 2.4 * 60 = 144 mins

Speed can be defined as distance covered per unit time. Speed is a scalar quantity and as such it has magnitude but no direction.

Mathematically, speed is given by the formula;

`Speed = (distance)/(time)`

Substituting into the equation, we have;

`Speed = (3.2)/(144)`

Speed = 0.0222 miles/min

Now, to find the time to walk 1.84 miles;

`Time = (distance)/(speed)`

`Time = (1.84)/(0.0222)`

Time = 82.9 mins (to 1 decimal point).

Method II

Let the new time = x

3.2 miles = 2.4 hours

1.84 miles = x hours

Cross-multiplying, we have;

3.2x = 2.4 * 1.84

3.2x = 4.416

x = 4.416/3.2

x = 1.38 hours

Now, we would convert the hours to minutes;

x = 1.38 * 60

x = 82.8 mins.